The #1 Vitamin for Stronger Erections (Science Backed)

9 Jan 2026 · 10 min
10:16

Dr. Anne Truong explains how vitamin D3 improves erectile function by lowering inflammation and boosting nitric oxide, which increases blood flow. She recommends testing your 25-hydroxy vitamin D level and aiming for 45 ng/mL, but stresses that supplementation alone won't work without diet, exercise, sleep, and stress reduction.

Questions this video answers

Over 7,000.

Calcitriol or 25-hydroxy vitamin D (do not measure D2).

Less than 30 ng/mL is described as low; the speaker gives a normal range of 30–60 ng/mL and prefers around 45 ng/mL.

Approximately 1,000 to 2,000 IU per day.

January 9, 2026.

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